ghash-x86_64.pl: add Haswell performance data.

# Westmere	1.76(+14%)

# Sandy Bridge	1.79(+9%)

# Ivy Bridge	1.79(+8%)

# Haswell	0.55(+93%) (if system doesn't support AVX)

# Bulldozer	1.52(+25%)

# March 2013

# suggested by Shay Gueron[1]. Even though contemporary AVX-capable

# CPUs such as Sandy and Ivy Bridge can execute it, the code performs

# sub-optimally in comparison to above mentioned version. But thanks

# to Ilya Albrekht and Max Locktyukhin of Intel Corp. we know that

# it will perform better on upcoming Haswell processor. [Exact

# performance numbers to be added at launch.]

# to Ilya Albrekht and Max Locktyukhin of Intel Corp. we knew that

# it performs in 0.41 cycles per byte on Haswell processor.

#

# [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest